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&lt;div&nbsp;dir=&quot;ltr&quot;&gt;&lt;div&gt;&lt;div&gt;&lt;div&gt;&lt;div&gt;hello,&lt;br&gt;&lt;br&gt;&lt;/div&gt;According&nbsp;to&nbsp;you&nbsp;grate&nbsp;support&nbsp;I&nbsp;got&nbsp;from&nbsp;you&nbsp;at&nbsp;yesterday,&nbsp;I&nbsp;could&nbsp;continue&nbsp;my&nbsp;project,&nbsp;where&nbsp;I&nbsp;use&nbsp;Cowboy&nbsp;webserver&nbsp;and&nbsp;using&nbsp;Websocket.&nbsp;Now&nbsp;I&nbsp;made&nbsp;an&nbsp;own&nbsp;web&nbsp;page&nbsp;with&nbsp;basic&nbsp;features&nbsp;I&nbsp;need,&nbsp;so&nbsp;the&nbsp;server&nbsp;and&nbsp;client&nbsp;can&nbsp;communicates&nbsp;to&nbsp;eachother.&nbsp;I&nbsp;like&nbsp;it.&nbsp;&lt;br&gt;&lt;br&gt;Now&nbsp;I&nbsp;would&nbsp;like&nbsp;to&nbsp;step&nbsp;forward,&nbsp;and&nbsp;I&nbsp;would&nbsp;like&nbsp;to&nbsp;implement&nbsp;a&nbsp;Request-Response&nbsp;mechanism.&nbsp;I&nbsp;read&nbsp;few&nbsp;articles&nbsp;in&nbsp;to&nbsp;this&nbsp;topic,&nbsp;and&nbsp;all&nbsp;of&nbsp;them&nbsp;has&nbsp;mentioned&nbsp;this&nbsp;&quot;feature&quot;&nbsp;is&nbsp;not&nbsp;part&nbsp;of&nbsp;the&nbsp;Websocket&nbsp;standard.&nbsp;They&nbsp;were&nbsp;suggested&nbsp;to&nbsp;use&nbsp;some&nbsp;sub-protocols&nbsp;for&nbsp;this,&nbsp;but&nbsp;I&nbsp;did&nbsp;not&nbsp;see&nbsp;any&nbsp;written&nbsp;in&nbsp;Erlang.&lt;br&gt;&lt;br&gt;&lt;/div&gt;So,&nbsp;I&nbsp;would&nbsp;like&nbsp;to&nbsp;ask&nbsp;you,&nbsp;do&nbsp;I&nbsp;understand&nbsp;right&nbsp;that&nbsp;Cowboy&nbsp;does&nbsp;not&nbsp;have&nbsp;this&nbsp;feature&nbsp;too?&nbsp;If&nbsp;so,&nbsp;do&nbsp;you&nbsp;have&nbsp;some&nbsp;idea&nbsp;how&nbsp;can&nbsp;I&nbsp;implement&nbsp;a&nbsp;basic&nbsp;request-response&nbsp;mechanism?&nbsp;Probably&nbsp;one&nbsp;of&nbsp;you&nbsp;guys&nbsp;in&nbsp;this&nbsp;forum&nbsp;have&nbsp;some&nbsp;idea.&lt;br&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;Btw,&nbsp;the&nbsp;links&nbsp;I&nbsp;read&nbsp;about&nbsp;this&nbsp;topic:&lt;br&gt;   &nbsp;&lt;a&nbsp;href=&quot;http://stackoverflow.com/questions/10882370/websocket-request-response-subprotocol&quot;&gt;http://stackoverflow.com/questions/10882370/websocket-request-response-subprotocol&lt;/a&gt;&lt;br&gt;   &nbsp;&lt;a&nbsp;href=&quot;http://alabor.me/articles/request-response-oriented-websockets/&quot;&gt;http://alabor.me/articles/request-response-oriented-websockets/&lt;/a&gt;&lt;br&gt;   &nbsp;&lt;a&nbsp;href=&quot;https://www.npmjs.com/package/primus-responder&quot;&gt;https://www.npmjs.com/package/primus-responder&lt;/a&gt;&lt;br&gt;&lt;/div&gt;&lt;div&gt;&lt;br&gt;&lt;/div&gt;thanks&nbsp;for&nbsp;your&nbsp;help,&lt;br&gt;&lt;/div&gt;/Robi&lt;br&gt;&lt;/div&gt;<br>

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